Hottest Questions This Week

5

votes

1

answer

173

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Flexibility of long-chain aliphatic compounds

answered Jan 14 at 5:38 Geoff Hutchison 23.3k

2

votes

1

answer

385

views

Do we really have technology with the resolution to distinguish between layers of single atoms of materials?

crystallography lattices

modified yesterday M. Farooq 9,228

6

votes

1

answer

120

views

What are computed energies in DFT and FF methods relative to?

computational-chemistry energy

modified Jan 16 at 10:44 Wychh 123

0

votes

2

answers

146

views

Magnesium oxide dissolving in distilled water

ions

modified 4 hours ago Loong♦ 38.4k

-1

votes

3

answers

52

views

Indicator for H2S [closed]

organic-chemistry inorganic-chemistry

modified yesterday Karl 7,685

1

vote

2

answers

68

views

Deprotonated form of phenolphthalein

acid-base equilibrium

answered yesterday FusRoDah 546

2

votes

2

answers

57

views

Coordination number of chromium(III) oxalate complex

inorganic-chemistry coordination-compounds

modified Jan 14 at 14:56 Martin - マーチン♦ 37.3k

2

votes

2

answers

63

views

What are Degenerate Rotational Energy Levels Physically?

physical-chemistry quantum-chemistry energy

answered 2 days ago porphyrin 20.6k

3

votes

1

answer

79

views

Interstitial defects in crystals: “high energy configurations”?

crystal-structure crystallography

modified 21 hours ago Karsten Theis 13.4k

0

votes

1

answer

75

views

Why did they ‘split’ this H2+ ion in the ionic equation?

aqueous-solution equation-of-state

modified 2 days ago orthocresol♦ 48.3k

4

votes

0

answers

157

views

Hartee-Fock vs tight binding and others

computational-chemistry

asked Jan 13 at 14:48 Anton 41

0

votes

1

answer

44

views

Se+P White or red P?

inorganic-chemistry reaction-mechanism allotropes

modified Jan 13 at 21:43 Loong♦ 38.4k

3

votes

2

answers

79

views

Is anode actually ever negative?

electrochemistry redox

modified yesterday M. Farooq 9,228

0

votes

1

answer

37

views

What is the correct term of a chemical formula for very large molecules if not just “chemical formula”?

molecular-structure proteins teaching-lab

answered 12 hours ago Andrew 3,242

1

vote

2

answers

61

views

Silver mirror and copper mirror

organic-chemistry silver

modified yesterday owjburnham 445

1

vote

1

answer

41

views

Some substances appear white when crushed while others do not. Why?

everyday-chemistry crystal-structure color minerals alkali-metals

answered Jan 14 at 21:56 DrMoishe Pippik 17.6k

0

votes

1

answer

41

views

Why does methyl not shift in the mechanism of isoborneol to camphene?

organic-chemistry reaction-mechanism

answered yesterday Mathew Mahindaratne 14k

7

votes

1

answer

40

views

Computed partial charges for protonated amine: discrepencies between Gasteiger and other methods

computational-chemistry formal-charge

answered Jan 16 at 3:37 Geoff Hutchison 23.3k

-3

votes

1

answer

62

views

What in salt makes ice unable to refreeze? [closed]

physical-chemistry

answered Jan 13 at 19:51 Flyingfenix 321

2

votes

1

answer

60

views

How does Potassium Hexfluoronickelate(IV) exist in a stable state?

inorganic-chemistry coordination-compounds oxidation-state

modified 1 hour ago Oscar Lanzi 20.8k

0

votes

2

answers

36

views

Why does water vapour deviate much more from ideal gas behaviour as it is cooled compared to nitrogen gas?

gas-laws kinetic-theory-of-gases

modified 2 days ago Poutnik 7,856

2

votes

1

answer

45

views

Reimer-Tiemann reaction on indole

organic-chemistry nucleophilic-substitution electrophilic-substitution carbene

modified Jan 14 at 17:48 Waylander 9,244

1

vote

0

answers

86

views

What is “salpotricon”? [closed]

terminology explosives pyrotechnics

modified Jan 14 at 17:11 andselisk♦ 27.8k

2

votes

1

answer

53

views

Gibbs energy: the term −TdS. Where does the reversible heat go?

physical-chemistry entropy free-energy

modified 6 hours ago Buck Thorn 9,671

0

votes

1

answer

39

views

Estimation of Sodium Hydroxide

acid-base concentration titration

modified Jan 16 at 16:56 Mathew Mahindaratne 14k

-1

votes

1

answer

39

views

Type of equipment to measure exact amounts of liquid

equipment

modified 2 days ago Mathew Mahindaratne 14k

0

votes

2

answers

39

views

What are the assumption of Gibbs free energy equation referring to the system and the surrounding?

energy

modified 19 hours ago theorist 2,254

6

votes

0

answers

50

views

Why is concentration used as a proxy for activity instead of mole fraction?

physical-chemistry thermodynamics

modified Jan 15 at 14:31 user68044 81

0

votes

1

answer

50

views

Reaction between acrolein and hydrazine

organic-chemistry

modified 2 days ago Mathew Mahindaratne 14k

1

vote

1

answer

62

views

How energy is released when chemical bond is formed?

physical-chemistry bond energy

modified Jan 15 at 11:17 Maurice 2,177

2

votes

1

answer

29

views

Are there any common (preferably somewhat complex) organic molecules that help combat ocean pollution? [closed]

organic-chemistry

answered Jan 16 at 1:20 iad22agp 8,612

-1

votes

1

answer

36

views

Acidity order checking

organic-chemistry hybridization amino-acids

modified Jan 16 at 10:53 Grace 132

8

votes

0

answers

45

views

Can you explain DFT and TDDFT functioning (math aside)?

quantum-chemistry density-functional-theory td-dft

modified Jan 13 at 17:18 C. Alexander 81

2

votes

1

answer

35

views

What is the meaning of parentheses in “NAD(P)H”?

redox nomenclature

answered Jan 13 at 3:36 Mathew Mahindaratne 14k

0

votes

0

answers

54

views

Reasoning behind the formula to determine the number of hyperconjugative structures

organic-chemistry resonance hyperconjugation

modified Jan 14 at 3:46 Magnesium 938

0

votes

1

answer

42

views

Is it more energy efficient to desalinate seawater by flash boiling or by flash freezing? [closed]

water

modified Jan 16 at 23:10 Karl 7,685

0

votes

1

answer

41

views

Hardy Schulze Rule

physical-chemistry surface-chemistry

modified 2 days ago Nilay Ghosh 13.6k

1

vote

1

answer

52

views

On the origin of Gibbs Free Energy

physical-chemistry thermodynamics

modified Jan 14 at 21:18 Maurice 2,177

3

votes

1

answer

40

views

Surface energy for different crystallographic planes

energy metal surface-chemistry

answered Jan 15 at 12:33 Wychh 123

0

votes

1

answer

51

views

Can mixing two or more molecules in stomach acid pool, form a new larger molecule and what is a common example? [closed]

acid-base drugs

answered 14 hours ago Buck Thorn 9,671

1

vote

1

answer

39

views

Euler's Theorem and Extensive properties

thermodynamics

answered Jan 15 at 21:51 Buck Thorn 9,671

0

votes

1

answer

38

views

Chemical structure of Turquoise [closed]

minerals

answered Jan 13 at 16:28 Karsten Theis 13.4k

-2

votes

2

answers

38

views

How do you determine whether is it [products] - [reactants] or [reactants] - [products] when calculating the enthalpy change of a reaction?

thermodynamics enthalpy

modified 2 days ago theorist 2,254

-1

votes

0

answers

48

views

Why are group 7 to 9 elements good hydrogenation catalyst?

coordination-compounds transition-metals hydrogen catalysis periodic-table

asked Jan 14 at 8:38 Abu Shahid 11

1

vote

1

answer

48

views

Why Freundlich adsorption isotherms fails at high pressure conditions?

physical-chemistry surface-chemistry adsorption

answered Jan 16 at 6:30 Jash 31

0

votes

1

answer

47

views

Can the 5+ and 4+ oxidation state of Vanadium ion exist independently?

redox transition-metals reduction-potential

modified Jan 13 at 16:36 Maurice 2,177

4

votes

1

answer

46

views

What is the effect of basis set on charge transfer?

quantum-chemistry basis-set

answered 23 hours ago rlaplaza 1

0

votes

1

answer

46

views

Cannizzaro reaction on p-dimethylaminobenzaldehyde [closed]

organic-chemistry nucleophilic-substitution

modified 2 days ago Sir Arthur7 128

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